Qualitative Identification of the Spin-to-Orbital Conversion Mechanism Modulated by Rare-Earth Nd, Gd, and Ho Metals via Terahertz Emission Measurements
文献类型：期刊论文
| 作者 | Liu, Long1; Jiang, Tianran2; Zhao, Xiaotian1; Chen, Ke2; Lai, Tianshu2; Liu, Wei1; Zhang, Zhidong1 |
| 刊名 | ADVANCED FUNCTIONAL MATERIALS
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| 出版日期 | 2024-09-19 |
| 页码 | 8 |
| 关键词 | orbital current spin current spin-orbit coupling spin-to-orbital conversion terahertz |
| ISSN号 | 1616-301X |
| DOI | 10.1002/adfm.202411262 |
| 通讯作者 | Zhao, Xiaotian(xtzhao@imr.ac.cn) ; Lai, Tianshu(stslts@mail.sysu.edu.cn) ; Liu, Wei(wliu@imr.ac.cn) |
| 英文摘要 | It is crucial to study the materials that could effectively facilitate the inter-conversion between charge, spin, and orbital degrees of freedom. In this work, the conversion among these three types of degrees of freedom in Pt/CoFeB/rare-earth (RE, represents Nd, Gd, and Ho)/Ti multilayers is manipulated. Through terahertz (THz) emission measurements, it is found that the spin current induced by a femtosecond laser is converted into an orbital current via the spin-orbit coupling of the RE layer. Notably, the light RE (Nd) and heavy RE (Gd and Ho) induce the orbital current with opposite polarization directions, ultimately leading to a weakening or enhancement of the THz emission intensity, respectively. Moreover, the fast Fourier transform reveals that Gd exerts the most significant influence on increasing the whole THz spectrum within the Pt/CoFeB/RE/Ti structure. The findings of RE-modulated spin-to-orbital conversion provide valuable insights into the fundamental transport mechanism of the orbital current. In terahertz (THz) emission experiments, the spin-to-orbital-to-charge conversion process is modulated by utilizing the spin-orbit coupling of rare-earth (RE) metals Nd, Gd, and Ho. Depending on the type of RE metal, a tunable THz emission signal is observed in Pt/CoFeB/RE/Ti multilayer. This work offers insights into the inter-conversion mechanism between charge, spin, and orbital degrees of freedom. image |
| 资助项目 | Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China[52031014] ; National Natural Science Foundation of China[52301254] ; National Natural Science Foundation of China[52271193] ; National Natural Science Foundation of China[52171196] ; National Natural Science Foundation of China[12074441] ; National Natural Science Foundation of China[12304386] ; Basic and Applied Basic Research Foundation of Guangdong Province[2020A1515110192] ; Guangzhou Basic and Applied Basic Research Foundation[202102080414] ; IMR Innovation Fund[2023-PY02] ; [22hytd08] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001315067000001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Basic and Applied Basic Research Foundation of Guangdong Province ; Guangzhou Basic and Applied Basic Research Foundation ; IMR Innovation Fund |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Xiaotian; Lai, Tianshu; Liu, Wei |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Long,Jiang, Tianran,Zhao, Xiaotian,et al. Qualitative Identification of the Spin-to-Orbital Conversion Mechanism Modulated by Rare-Earth Nd, Gd, and Ho Metals via Terahertz Emission Measurements[J]. ADVANCED FUNCTIONAL MATERIALS,2024:8. |
| APA | Liu, Long.,Jiang, Tianran.,Zhao, Xiaotian.,Chen, Ke.,Lai, Tianshu.,...&Zhang, Zhidong.(2024).Qualitative Identification of the Spin-to-Orbital Conversion Mechanism Modulated by Rare-Earth Nd, Gd, and Ho Metals via Terahertz Emission Measurements.ADVANCED FUNCTIONAL MATERIALS,8. |
| MLA | Liu, Long,et al."Qualitative Identification of the Spin-to-Orbital Conversion Mechanism Modulated by Rare-Earth Nd, Gd, and Ho Metals via Terahertz Emission Measurements".ADVANCED FUNCTIONAL MATERIALS (2024):8. |
入库方式： OAI收割
来源：金属研究所
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